Lighting construction



1939- M. s. WIDEROE 2,170,882

LIGHTING CONSTRUCTION Filed May 5, 1937 3 Sheets-Sheet l Aug. 9, 1939. M. WlDERdE 2,170,882

LIGHTING CONSTRUCTION Filed May 5, 1937 3 Sheets-Sheet 2 'lilll llig I II II II:

Aug. 29; 1939. M. s. WIDEROE 2,170,882

LIGHTING CONSTRUCTION Filed May 5, 1937 3 Sheets-Sheet 5 1 72 v4? 22 1'02; MMJWM g3! 447 #WMW Patented Aug. 29, 1939 UNITED STATES PATENT OFFICE to Benjamin Electric Mfg.

Company, Des

Plaines, 111., a corporation of Illinois Application May 5, 1937, Serial No. 140,792

7 Claims.

This invention relates to lighting construction and, more particularly, to lighting fixtures for floodlighting, comprising a. device for illuminating a comparatively large area with a diffuse light and simultaneously directing a concentrated beam over a desired restricted area.

The device is adapted to meet modern requirements for fioodlighting gasoline service stations, superservice stations, roadside inns, etc., by providing adequate, uniform, general illumination of grounds, drives, entrances, pump islands, and surface areas from a large diffusing reflector with simultaneous h gh intensity floodlighting of a building, or any other desired surface or portion of the area, to several times the intensity on the ground, by means of a concentrated beam directed to the desired surface to be illuminated, by means of an inner floodlight projector.

It is an object of the invention to provide a fixture whereby sufficient contrast between the diffused. illumination of large ground ar a and a building or other surface, may be obtained to attract attention and make the floodlighted areas stand out from their surroundings.

In the present invention a floodlighting beam from an inner projector intercepts a portion of the light from, the lamp used therewith and concentrates this light on. the object to be emphasized. The balance of the light is utilized by a so large diffusing reflector for a general illumination of the ground areas. In other words, it is an object of the present invention to provide what might be called a two-in-one lighting fixture which provides from. the same unit the two distinct kinds of floodlighting necessary for effective illumination; ground lighting from a large diffusing reflector, and building or restricted area floodlighting from an adjustable beam reflector located preferably within the diffusing reflector.

A further object of the invention is to provide a fixture of the character described and a plurality of interchangeable beam reflectors capable of being mounted therein, whereby a narrow beam of exceptionally high candle power may be used for fioodlighting at considerable distance for relatively small areas, or reflector be used of a desired larger size which will produce a wider beam spread for floodlighting larger objects at shorter range.

The device is intended to be substantially Weatherproof and to be substantially universally adjustable so that it is adaptable for a great variety of lighting requirements. Simple horizontal and vertical adjustments are arranged to facilitate positioning the diffusing reflector in relation to the general area to be ligh ed and to afford a means of centering an adjustable floodlighting beam on a particular object to be floodlighted. The entire unit is adjustable laterally 50 and vertically, and the beam reflector is adjustable laterally relative to the diffusing reflector, and the beam may also be adjusted vertically to a limited extent if desired.

Another object is the provision of a new and novel hood and bracket construction which materially reduces the wiring time and assures a weatherproof structure with all Wiring enclosed.

It is also an object to provide a lighting fixture of the character described which is of comparatively few parts, cheap to manufacture, easy to assemble and wire, and which will not easily get out of order.

Further objects will be apparent from the specification and the appended claims.

In the drawings:

Figure 1 is a vertical, longitudinal section through a fixture mounted on a fixed support and illustrates one embodiment of the invention.

Fig. 2 is a perspective vi w of the reflector with the hood and bracket broken away and illustrates a preferred shape of diffusing reflector.

Fig. 3 is a side elevation of the embodiment illustrated in Fig. l. with a portion of the rcflectors broken away.

Fig. l is a top view of the embodiment illustrated in Figs. 1 and 2, with the combined weatherproof cover and socket support removed therefrom.

Fig. 5 is a front view of one of the beam reflectors which be interchangeably and adjustably mounted in the diffusing reflector.

Fig. 6 is a front elevation of a more concentrated beam reflector which is interchangeable with the beam reflector, illustrated in Figs. 1 and 5.

Fig. 7 is a vertical sectional view through the reflector illustrated in Fig. 6, and'is taken on a line substantially corresponding to line 7-? of Fig. 6.

Fig. 8 is a perspective view of the weatherproof cover and socket mounted thereon.

Fig. 9 is a fragmentary sectional view through the vertical adjusting means and is taken on a line substantially corresponding to line 9-? of Fig. 1.

Fig. 10 is a transverse sectional view through the strain relief for the conductors and is taken on a line substantially corresponding to line ill-l0 of Fig. 1.

Referring to the drawings in detail, the embodiment illustrated comprises a bracket I, having a cylindrical portion 2, which latter is adapted to be mounted for lateral swinging adjustment on a suitable tubular support 3. These fixtures are usually mounted on the top of very high poles and may be secured in any desired lateral adjustment by means of set screws 4. The bracket I is provided with a suitable passage 5 therethrough for the conductors 6 leading to the socket. A shallow groove 1 is provided in the bracket, as

illustrated in Fig. 10, and the conductors 6 may be securely clamped in this groove by means of a plate 8 secured to the bracket by means of screws 9. The bracket 5 is provided with forwardly extending spaced flanges or wings it and H. a hood I2 is provided with a rearwardly extending flange 13 which extends between the bracket flanges l and l and is pivotally mounted on the flange II] by means of a bolt [4 on which the entire reflector and hood portion of the fixture pivots for vertical adjustment. The pivot bolt l4 may be secured by means of a nut l5. The hood flange I3 is provided with an arcuate slot l6 therein and a bolt I7 is mounted in the flange l0 and extends through the arcuate slot l9 and may be secured by means of a nut 18. The bracket flange II is provided with openings 19 and 2!! to provide clearance for the bolts I4 and I1, respectively, and to permit clamping the nuts l and I8 against the hood flange l3 so that the fixture may be securely locked in any desired vertical adjustment. The bracket and hood flange may be supplied with suitable co-operating indicia,

as illustrated in Fig. 1, whereby the fixture may be accurately adjusted at a predetermined angle. This indicia or other suitable marking may be on both sides of the fixture.

A narrow elongated cover 21 is provided with depending flanges 22 which are adapted to telescope over the hood and bracket when the cover is mounted on the hood and secured thereto by means of screws 23 extending into the hood casting. The rear portion of the cover 2! is of arcuate formation, as illustrated at 24, Fig. 1, so that it provides weatherproof construction in any adjusted position of the fixture. bracket, and cover are preferably aluminum castings or similar material and are so arranged that the entire structure is very rigid when properly secured in an adjusted position. I

A socket 25 is mounted on the cover 2| by means of suitable screws 26. This socket is preferably of the so-called Mogul skeleton type, as shown, and is adapted to hold a lamp in vertical position with respect to the hood and reflector associated therewith.

A reflector 26 is secured to the hood and this reflector is preferably of a shape substantially corresponding to that illustrated in Fig. 2; that is, it may be called scoop shaped, having a substantially flat top portion 21, rounded at the sides and rear and having a substantially straight line front cut off edge 21a. The rear portion 28 is suitably rounded as shown, and substantially triangular shaped sides 29 are provided having the apex thereof adjoining the front end of the top portion 21. This reflector is preferably provided with a diffusing reflecting surface and may be secured to the hood l2 by any suitable means,

such as screws 38. The joint between the reflector and hood may be made weatherproof by a suitable gasket 3!. A lamp 32 is mounted in the socket 25 and extends into the reflector 26 as illustrated. The reflector 26 is arranged to illuminate a comparatively large area by means of a widely distributed diffused light.

A concave beam reflector 34 is provided with an'opening 35 adjacent its upper end and through which the lamp 32 extends. This reflector 34 is positioned closely adjacent the lamp 32 and preferably with its front edge slightly in front of the light source. The diffusing reflector 26 is provided with a bracket 36 adapted to receive a pivot screw 3'! extendingthrough the reflector Referring particularly to Figs. 1, 3, 4, and 9,

The hood,

34 and pivotally securing the beam reflector to the bracket as shown. A second bracket 38 is secured adjacent the bottom of the diffusing reflector by means of screws 39 and a portion of the beam reflector 34 is turned rearwardly at 40 and provided with a slot 4| through which a threaded thumbscrew 42 extends and is threaded into the bracket 38. The thumbscrew 42 is in axial alignment with the pivot screw 31. It will, therefore, be apparent that the beam reflector 34 may be laterally adjusted around the lamp 32 on an angularly positioned axis 43, which axis passes through the light source 44.

The opening 35 through the beam reflector is slightly elongated, as illustrated in Fig. 5, in order to allow for a limited lateral adjustment of the reflector around the axis. It will be understood that the angular relationship of the axis 43 to the vertical axis of the lamp may vary somewhat; however, in the present embodiment, the angle of the axis 43 to the vertical axis of the lamp is approximately 20. The opening 35 through the reflector is sufiiciently elongated to enable the beam to be adjusted laterally across the field illuminated by the diffusing reflector 26, and, also, the concentrated beam may be substantially parallel with the upper portion 21 of the reflector. It will be apparent that the diffusing reflector will illuminate a comparatively large area; also, there are no sharp cut-off shadows along the edges of the lighted area. The light is out oficlosely at the back and at the sides adjacent the back. However, the overhanging portions of the reflector provide sulficient diffused illumination behind the cut-off line on the ground to eliminate disagreeable contrast and provide some illumination outside the more brilliantly lighted areas.

It will be noted that the hood and fixture thereon are supported entirely on the bracket flange m, and the flange ll merely provides a cover for one side of the hood bracket. The construction herein described provides a narrow weatherproof housing which may be easily wired and serviced and which may be easily adjusted to effectively illuminate a desired area with diffused light, and a restricted area such as a building or other surface, with a concentrated beam which may be adjusted independently of the diffused area.

The beam reflector illustrated in Fig. 5 may be formed from a single sheet of suitable material and is preferably provided with a polished reflecting surface. It will be understood that a plurality of these reflectors of various sizes may be provided and that they are interchangeable for mounting in the diffusing reflector, as illustrated in Fig. 1. a

The beam reflector illustrated in Figs. 6 and 7 is a smaller reflector than that shown in Fig. 5 and is intended to provide a more highly concentrated beam. This reflector may comprise a concave body portion 45 which may be formed of a single sheet of suitable material and provided with a ring-like member 46 secured to the top thereof and having an opening 41 therethrough to receive the lamp, this opening being of sufficient size to permit lateral adjustment of the reflector. The ring-like member 46 extends upwardly and forwardly as illustrated at 48 to provide a forwardly extending bracket-like portion having an opening 49 therethrough to receive the pivot screw 31, whereby the reflector may be pivotally mounted in the diffusing reflector in the same manner as the larger reflector shown in Fig. 1. The lower portion of the body member is turned rearwardly to provide a flange 50, to which is secured a U-shaped strap 5| having a slot 52 therein through which the thumbscrew 42 may extend when the beam reflector is mounted in the diffusing reflector. The slot 52 enables a slight adjustment of the reflector to and from the light source 44 and also provides a light vertical adjustment of the concentrated beam.

Modifications may be apparent to those skilled in the art and it is desired, therefore, that the invention be limited only by the prior art and the scope of the appended claims.

Having thus described this invention what is claimed and desired to be secured by Letters Patent is:

1. In a fixture of the character described, a diffusing reflector, a hood on said reflector and having a socket therein for supporting a lamp with its light source in said reflector and on substantially the axial line of said hood, a beam reflector having its upper end pivotally mounted in front of the axial line of said lamp and its lower end pivotally mounted on the opposite side of said axial line with the pivotal axis of said beam reflector extending substantially through said light source, said beam reflector having an opening for said lamp to extend therethrough and sufllciently large to permit pivotal adjustment of said beam reflector around said light source.

2. A floodlighting construction comprising a hood, a diffusing reflector depending from said hood and extending forwardly therefrom, a socket in said hood for supporting a lamp with its axis substantially vertical and its light source in said reflector in a position to direct a diflused light forwardly and downwardly over a comparatively large area, a concave beam reflector back of said lamp and arranged to direct a concentrated beam forwardly and downwardly in said diffused area, means for pivotally mounting the upper end of said beam reflector in front of the vertical axis of said lamp, and means for pivotally mounting to the lower end of said beam reflector back of said axis, said pivots being in alignment on an axis substantially through said light source.

3. A floodlighting construction comprising a hood, a diffusing reflector depending from said hood and extending forwardly therefrom, a socket in said hood for supporting a lamp with its axis substantially Vertical and its light source in said reflector in a position to direct a difl'used light forwardly and downwardly over a comparatively large area, a concave beam reflector back of said lamp and arranged to direct a concentrated beam forwardly and downwardly in said diffused area, means for pivotally mounting the upper end of said beam reflector in front of the vertical axis of said lamp, and means for pivotally mounting to the lower end of said beam reflector back of said axis, said pivots being in alignment on an axis substantially through said light source, said lamp extending through a laterally enlarged hole in said beam reflector to enable pivotal movement.

4. A floodlighting construction comprising a lamp receptacle for supporting a lamp in depending position with its axis substantially vertical, a hood surrounding and housing said receptacle, reflector means supported by the hood in depending position so that the lamp extends from the hood downwardly into the reflector means, a cap having a vertical tubular portion to be slipped over a vertical tubular post, said hood being mounted on said cap for pivotal movement about a horizontal axis, the tubular portion of said cap having a passage therethrough for the feed wires leading from the post to the lamp receptacle, and means for housing the feed wires from the cap to the receptacle comprising a cover mounted to move with the hood and extending above the hood and the upper end of the vertical tubular portion of the cap.

5. A floodlighting construction comprising a lamp receptacle for supporting a lamp in depending position with its axis substantially vertical, a hood surrounding and housing said receptacle, reflector means supported by the hood in depending position so that the lamp extends from the hood downwardly into the reflector means, a cap having a vertical tubular portion to be slipped over a vertical tubular post, said hood being mounted on said cap for pivotal movement about a horizontal axis, the tubular portion of said cap having a passage therethrough for the feed wires leading from the post to the lamp receptacle, and means for housing the feed wires from the cap to the receptacle comprising a cover mounted to move with the hood and extending above the hood and the upper end of the vertical tubular portion of the cap, said cover and cap having curved coaxial overlapping surfaces having their axes substantially coincident with said horizontal axis.

6. A floodlighting construction comprising a lamp receptacle for supporting a lamp in depending position with its axis substantially vertical, a hood surrounding and housing said receptacle, reflector means supported by the hood depend ing position so that the lamp extends from the hood downwardly into the reflector means, a cap having a vertical tubular portion to be slipped over a vertical tubular post, said hood being mounted on said cap for pivotal movement about a horizontal axis, the tubular portion of said cap having a passage therethrough for the feed wires leading from the post to the lamp receptacle, and means for housing the feed wires from the cap to the receptacle comprising a cover mounted to move with the hood and extending above the hood and the upper end of the vertical tubular portion of the cap, said horizontal axis being closer to the axis of said tubular porti n than to the axis of the lamp.

7. A floodlighting construction comprising a lamp receptacle for supporting a lamp in depending position with its axis substantially vertical, a hood surrounding and housing said receptacle, reflector means supported by the hood in depending position so that the lamp extends from the hood downwardly into the reflector means, a cap having a vertical tubular portion to be slipped over a vertical tubular post, means for mounting said hood on said cap for pivotal movement about a horizontal axis comprising a pivot member connecting the hood and cap, and a clamping member extending through the hood and cap for holding the hood in adjusted position, the axis of said tubular portion being closer to the pivot member than to the clamping member, said cap having a passage therethrough for the feed wires from the post to the lamp receptacle, and means for housing the feed wires from the cap to the receptacle comprising a cover mounted to move with the hood and extending above the hood and the upper end of the vertical tubular portion of the cap.

MARSHALL S. WIDEROE. 

